Good evening ,
Answer :
A.
x = ±20
Step-by-step explanation:
x² − 1 = 399 ⇔ x²= 400 ⇌ x² = 20² ⇌ x² − 20² = 0 ⇌ (x-20)(x+20) = 0
⇌ x = 20 or x = -20.
:)
<span>3 años. A los tres años las edades serán 39 y 33. 39 dividido por 33 es una relación igual a 13 dividido por 11.</span>
Answer:
37.50°
Step-by-step explanation:
The sum of both sides of an angle is 180°.
180° - 142.5° = 37.50°
Answer:
A. 10
Step-by-step explanation:
The perimeter is the sum of all the outside lengths
Therefore, to find the value of x, you must do:
x + x + 5 + x + 7 = 42
3x + 12 = 42
3x = 30
x =10
solution
Find the equivalent ratio for 64%. Write your answer in simplest form.
For this case we can do the following:
64% = 64/100
And if we simplify we got:
64/100 = 32/50 = 16/25 = 0.64
